CVE-2026-69588HighCVSS 7.5

Windows TCP/IP Denial of Service Vulnerability

Published
September 11, 2026
Last Modified

🔗 CVE IDs covered (1)

📋 Description

Missing release of memory after effective lifetime in Windows TCP/IP allows an unauthorized attacker to deny service over a network.

🎯 Affected products12

  • Windows 11 Version 23H2 for ARM64-based Systems
  • Windows 11 Version 23H2 for x64-based Systems
  • Windows 11 Version 24H2 for ARM64-based Systems
  • Windows 11 Version 24H2 for x64-based Systems
  • Windows 11 Version 25H2 for ARM64-based Systems
  • Windows 11 Version 25H2 for x64-based Systems
  • Windows 11 Version 26H1 for ARM64-based Systems
  • Windows 11 version 26H1 for x64-based Systems
  • Windows Server 2022
  • Windows Server 2022 (Server Core installation)
  • Windows Server 2025
  • Windows Server 2025 (Server Core installation)

✅ Remediation

KB5122882 (Security Update) — fixed build 10.0.20348.5622 KB5122871 (Security Update) — fixed build 10.0.26100.33438 KB5124008 (Security Update) — fixed build 10.0.26200.9445 KB5122880 (Security Update) — fixed build 10.0.22631.7582 KB5124008 (Security Update) — fixed build 10.0.26100.9445 KB5124012 (Security Update) — fixed build 10.0.28000.2954

🔗 References (11)